The data stored in IndexedDB does not remain permanently.

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This statement is partially true. The data stored in IndexedDB can remain permanently, but it depends on how the database is set up and the user's action.

By default, IndexedDB data is stored on the user's local machine and will remain until the user clears their browser's cache or deletes the specific database. However, developers can also choose to set up IndexedDB to sync with a server and store data permanently on that server.

It's important to note that while the data itself can remain permanently, the user's access to that data can still be restricted through permissions and authentication.